21143064446357 has 8 divisors (see below), whose sum is σ = 24165902573376. Its totient is φ = 18120826406592.

The previous prime is 21143064446327. The next prime is 21143064446407. The reversal of 21143064446357 is 75364446034112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21143064446357 - 2³⁴ = 21125884577173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21143064446327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149946308 + ... + 150087245.

It is an arithmetic number, because the mean of its divisors is an integer number (3020737821672).

Almost surely, 2^{21143064446357} is an apocalyptic number.

It is an amenable number.

21143064446357 is a deficient number, since it is larger than the sum of its proper divisors (3022838127019).

21143064446357 is a wasteful number, since it uses less digits than its factorization.

21143064446357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300043627.

The product of its (nonzero) digits is 5806080, while the sum is 50.

The spelling of 21143064446357 in words is "twenty-one trillion, one hundred forty-three billion, sixty-four million, four hundred forty-six thousand, three hundred fifty-seven".